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Brigantiaea leucoxantha (Sprengel) R. Sant. & Hafellner
Forest Bark-fire
Federal Protection: No US federal protection
State Protection: No Georgia state protection
Global Rank: G4G5
State Rank: SNR
Element Locations Tracked in Biotics: No
SWAP 2015 Species of Greatest Conservation Need (SGCN): No
SWAP 2025 Species of Greatest Conservation Need (SGCN): No
2025 SGCN Priority Tier:
Element Occurrences (EOs) in Georgia: 0
Habitat Summary for element in Georgia: Mesic hardwood forests and swamps
Pale green thallus with bright orange apothecia, the rims a shade lighter than the disks; disks sometimes discolor or darken with age or parasites, or appear whitish if partially eaten by foraging mollusks; thallus is rarely sorediate; FIELD ID: if fresh, unmistakable, given combination of pale green thallus & orange disks
Caloplaca pollinii can look like an ill or senescent member of this species; Letrouitia parabola has a dull olive thallus, & consistently dark disks contrasting with orange rims; both are relatively rare
None
Mesic hardwood forests & swamps; substrates: mostly hardwood bark (48% Quercus spp.); 1 record each from Juniperus & Taxodium, & 1 from ultramafic rock (dunite)
Corticolous lichenized fungus; photobiont a green, unicellular alga
None
Statewide (though no records from the Cumberland Plateau)
Harvesting old-growth hardwood forests
Uncommon & local
Conserve mature hardwood forests
Brodo, I. M. 2001. Lichens of North America. Yale University Press, New Haven, Conn.
Brodo, I. M. 2016. Keys to lichens of North America: revised and expanded. Yale University Press, New Haven, Conn.
Esslinger, T. L. 2021. A cumulative checklist for the lichen-forming, lichenicolous and allied fungi of the continental United States and Canada. Version 24. Opuscula Philolichenum 20: 100-394.
Malcolm Hodges
6 March 2022